I’m currently trying to extract a relatively small number of narrowband
channels out of about 10mhz. With USRP1, I can get two channels easily
using both sets of DDCs. In some instances, I can successfully use a
filterbank, however at 12.5khz channels, I quickly run out of horsepower
I don’t keep the decimation high enough, which does not always let me
the swath of RF I need.
Are there any other possibilities with the new USRP2 hardware to
more DDCs in the firmware to do more of this work on the USRP side? Any
other thoughts in general?